Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in POWI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.5M | $436.3M | +0.1% | 15.294% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 5.0M | $254.8M | — | 8.930% | 0.01% |
| 3 | Neuberger Berman Group LLC | 3.9M | $201.4M | -1.0% | 7.059% | 0.15% |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | 3.4M | $171.8M | +38.5% | 6.023% | 0.03% |
| 5 | STATE STREET CORP | 3.1M | $157.6M | -9.5% | 5.524% | 0.01% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | $128.4M | — | 4.499% | 0.00% |
| 7 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2.4M | $121.9M | — | 4.273% | 0.40% |
| 8 | SNYDER CAPITAL MANAGEMENT L P | 2.1M | $107.7M | +1.9% | 3.776% | 2.09% |
| 9 | DISCIPLINED GROWTH INVESTORS INC /MN | 2.0M | $100.3M | -2.1% | 3.516% | 2.05% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $85.8M | +4.4% | 3.006% | 0.01% |
| 11 | MORGAN STANLEY | 1.5M | $76.9M | +1.5% | 2.696% | 0.00% |
| 12 | Copeland Capital Management, LLC | 1.3M | $67.7M | +12.6% | 2.372% | 1.50% |
| 13 | Capital International Investors | 1.1M | $57.0M | -12.0% | 1.996% | 0.01% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 1.1M | $54.1M | +7.3% | 1.897% | 0.01% |
| 15 | Nuveen, LLC | 1.0M | $53.7M | +686.6% | 1.881% | 0.01% |
| 16 | Hudson Bay Capital Management LP | 1.0M | $51.2M | — | 1.795% | 0.55% |
| 17 | WESTWOOD HOLDINGS GROUP INC | 873K | $44.7M | -15.8% | 1.567% | 0.33% |
| 18 | Robeco Schweiz AG | 870K | $44.6M | +38.7% | 1.562% | 0.94% |
| 19 | NORTHERN TRUST CORP | 842K | $43.1M | +2.0% | 1.510% | 0.01% |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 758K | $38.8M | +5.5% | 1.360% | 0.01% |
| 21 | Stephens Investment Management Group LLC | 745K | $38.2M | -0.4% | 1.337% | 0.52% |
| 22 | BROWN ADVISORY INC | 687K | $35.2M | -8.3% | 1.233% | 0.06% |
| 23 | BNP Paribas Asset Management Holding S.A. | 638K | $32.7M | +6.8% | 1.145% | 0.04% |
| 24 | UBS Group AG | 625K | $32.0M | +126.2% | 1.121% | 0.00% |
| 25 | BANK OF AMERICA CORP /DE/ | 601K | $30.8M | +1.1% | 1.079% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in POWI — a direct measure of their conviction.
Filings activity in POWI during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 302 | +2.0% | 70.63% | +22.93 pp | $3.08B | +48% |
| Q4 2025 | 296 | 2.0% | 47.70% | 2.91 pp | $2.08B | 5.7% |
| Q3 2025 | 302 | 11% | 50.61% | 19.75 pp | $2.21B | 28% |
| Q2 2025 | 339 | +0.6% | 70.36% | +5.98 pp | $3.07B | +9.3% |
| Q1 2025 | 337 | +5.0% | 64.38% | 12.81 pp | $2.81B | 17% |
| Q4 2024 | 321 | 1.2% | 77.19% | 1.92 pp | $3.37B | 2.4% |
| Q3 2024 | 325 | 6.9% | 79.11% | 10.13 pp | $3.46B | 11% |
| Q2 2024 | 349 | — | 89.24% | — | $3.90B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying POWI stock.
Based on Q1 2026 13F filings, institutional ownership of Power Integrations, Inc. stands at 70.6%, held across 302 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of POWI, with approximately 8,521,749 shares worth $0.44B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of POWI.
Our composite Smart Money Score for POWI is 48 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
54 institutions opened new positions in POWI during Q1 2026, while 48 fully exited. 212 added to existing positions and 34 trimmed.
POWI institutional ownership rose by 22.93 percentage points quarter-over-quarter, with a net change of +6 holders.
The top 10 institutions account for 57.3% of all reported 13F value in POWI, and the top 25 account for 80.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Power Integrations, Inc. (POWI) Institutional Ownership